Elevator-gearing adjustment



Dec. l1, 1928.

F. L. OHLER ELEVATOR GEARING- ADJUSTMENT original Filed Sept. 9, 1922 Patented Dec. 11, 1923.

,unirse stares Para NTA OFFICE.

FRANK L. CELEB, OF TOLEDO, OHIO, ASSIGNR T0 THE HAUGH'IION ELEVATOR AND MACI-INE CO., GF TULEDO, OI-E, A CQRPORATON OE OHIO.. .l

nrnvn'ron'ennnrne ADJUSTMENT.

' Continuation of application Serial No. 587,114-, filed September 9, 1922. This application filed November 12 Serial No. 68,955.

This invention relatesto the adjustment of shaft bearings, more especially in connection with Worm gearing as used or driving elevators, with the object of securing and main-k taining the gearing in proper mesh for quiet operation.

` Referring to the drawings:

'Fig'. l is a view, With parts broken away, of an embodiment of the invention in connection with elevators;

Fig. 2 is a section on the line lI--IL Fig.

1; and A Y Fig. 3 is a section onk the line lll-IH,

by means oi bolts 11. One of these pilloiv blocks 9, 10, has inwardly projecting oil catching overhanging portion 12 in communioation by Way or' duct 13 With oil reservoir 14 centrally of the pillow block. rIhis oil retainer as to the other bearing or block is carried by housing ,15 for the Worm Wheel 7.

rl`he pillow blocks 9, 10, as clamped in position by the bolts 11, may snugly embrace eccentric bearing adjustment means 1G, normally non-rotative or fixed. These eccentrics'16 have therein bearings 17, lsay of babbitt as the bearings proper for the shaft 8.

A slot 18 medially of each eccentric 1G divides the eccentric partially into halves to provide clearance for oil ring 19 to ride on the shaft 8 and thus be ."otated to travel in the lubricant reservoir or oil Well 11i and bring oil into the slot 18 for feeding down between the bearings 17 and the shaft 8. f

Bridging this slot 18 is a pin 20, seating in recesses 21u01" the opposing slot Walls of the eccentric 16. A iork 22 is astride the pin 20. 'This Jfork 22 is iastwith bar 23 having its threaded ends oppositely extending through openings 24 in the pillow block section 10. By slacking oli nuts 25 on the bolts 11, the upper pillow bloc-k section 1() may be sui'liciently freed from its clamping position as to the eccentric 16, that by loosening a nut 26 on one end of the bar 23, similar nut 2PZ-on the opposite end of such bar 28 maybe run up, thereby drawing the bar 23 and the iork 22. rlllhis action through the pin 20, `may rotate the eccentric 16 to a desired angular position, when the opposing nut 26 Ina-y be tightened, and the pillow yblock sectionlUreclamped by tightening thelnuts 25 on the bolts l1.

The Worm Wheel 7 is in mesh With Worm 27 held for iixed axis ot rotation by bearings 28, 29. This Worin27 is actuated from motor Caps 31 over the outer ends of theshaft 8 are held in oil retaining position as to the pillow blocks 9, 10, bybolts 32. Bolts 33,

through the caps 31 and bearing against the eccentrics 1G, permit axial shifting of the shaft 8 with its Worm Wheel 7 and drum 5. Slaoking ofi' of one bolt 33 gives leeWay for running up of thefother, then each may be held by lock nut 3,4., as the adjusted position, say for bringing `the Worm Wheel 7 into the plane ot the Worm 27, isvdetermined as a factor for proper meshing relation hin eiiicient quiet and smooth elevator as Well as elevator gearing operation. l f.

The bearing' adjustment as herein disclosed is of material value, as a simple means, accessible at all times, even under load, as Well as during machine operation. In hoisting or elevator service, renewing and adjusting` bearings, involving taking the load away from the bearing, are problems of considerable delay and labor, and due to such., promotes practice of indulging therein uonly as a matter of extreme necessity.k It is accordingly not a current matter of maintained reiinement of adjustment, but one to be undertaken only when backlash is .so'seriously present as to cause trouble. n

Renewing the gears by replacement ynecessity is hastened by permitting slight play or backlash to exist. taining adjustments to minimize backlash, the life of the gears increased, and the period of usefulness ot' the Worin` is beneiited thereby many fold. While the elevator is in service, and even during elevator operation, the bearing adjustments herein may occur to change the axis position of theshaft 8 as to the axis of the Worm 27. This adjustment of the bearings 17 `may bring the' Accordingly by mainon qthe mit 26 is shifted as to gradnations 36 on the block section 10, there is a convenient checking of the angular shifting of one of .the eccentrics 1G for following .in shifting of the companion eccentric 16 to maintain the shaft 8 in proper alignment.

In' hoisting operations, as in the loading and unloading of an elevator car at a landing, VWhenever -the load .changes the unbalanced condition as to the counterweight, Whether up or down, the holding Worm gets a kneel; from rocking of the worm Wheel when. such ,change takes place. 'This is not .only a pound on the worin Wheel to slierten its life'andmntilate the pitch, but there is a concussion transmitted to the installation and hurtful thereto, as Well a shi'tot the elevater ycar away from the landing. Such backlash is still more disastrously present at rever-sal of car travel, and it, in passenger elevator service, may be distinctly felt by the `-trzmelers in the elexfator cannetwithstanding the car may have yieldable connection to the hoist line. The .convenience for maintaining kadjustment here-in encourages engineers of operation to keep all backlash out of the irormgeaiing, with resultant impi-oved vquiet service and equipment advantage, While the adjustment under yload brings the gearing into actual Working relations `during 'the adjustment, with no ichanges `from loading strainfactors to be approximated. They all there at'the time and cared'for automat-ically in the adjustments, even as te axial shifting for bringing the wheel and worm into the proper plane ier meshing. :Such ends are accomplished herein with a simple struct-nre economically and eeetnally lnbricated by ailoose oil ring.

lfifhat is clain'ied and it is desired to secure by lnited States Letters Yf-atent is l. In a structure embodying a hoist line, a load and a counterweightconnectedto said line, a drinn for actuating said line, a Worm Wheel for shifting the drum, a shaft for the Worm Wheel anddrum and having oppositely disposed radially extending faces, a Worm for aetuating the Worm wheel, vand sets ot' bearings, one for the shaft and one for the Worm, the set of shaft bearings being one adjacent one of said radially extending faces vand another vthe ether ef said radi- A:lily extending faces, the combinati-on of eceentrics for incr'nting the shaft bearings, the sai-d eocentrieseach including a pin, a yoke for engaging each pin, threaded means operable for angularly shifting the yelresot said assembled.operativestructure, and additional means .coasting between the eccentrics and the shaft for maintaining the eeeentrics po .sitioned as to the radially extending faces.

2. ln a structure embodying a hoist linej load Aand a counterwelght .connected to said line, a drum for actuating said line, a werm Wheel, a shaft with which said ydrum and Wheel are lined, a worm for actuating'the Worm `Wheel, and sets of bearing-s for `the shaft and worm, the combination of eccentrics for mounting one set of bearings, said eccentrics having intermediate slots, oil rings for the'bearings disposed in said slots, eccentric engaging means in said slots, and means epemhletor shifting said '.eocentrics through action `npon .said engaging means of said assembled operative structure.

'ln witness whereof Iaiix my signature.

FRANK L. OHLER. 

